Last night we made a little history. For the first time, a story developed entirely on the FRONTLINE/World Web site was broadcast on television. The story, "Nuclear Underground," about what U.S. officials are calling one of the biggest cases of nuclear smuggling they've ever uncovered, aired on PBS's The NewsHour With Jim Lehrer.

The dust-up in Khartoum between Sudanese security guards and Secretary of State Condoleezza Rice's staff is more than a diplomatic faux pas. It reveals once again how inept and unconcerned the Sudanese regime can be when it comes to world opinion. Roughing up Condi's communications director and dragging NBC's Andrea Mitchell from a press event won't exactly improve the image of a regime blamed for genocide and for crushing dissent.

London's public transport has always been an obvious target for terrorist attacks.

In a small community center in a working-class neighborhood, a group of young Muslim men in well-cut leather jackets, their shirt collars peeking out, sit speaking about why they have reached boiling point. "It's hopeless," says 23-year-old Yassin El-Abdi in flawless English with an American twang he has picked up from countless movies. Talking about the whites in town, he says angrily, "They feel we should be doing the same jobs as our parents did."

In Serbia, many felt it was a nightmare best forgotten. Some pretended it never happened. But the sudden appearance of a horrifying long-suppressed videotape has made it impossible to ignore.

"It was important to react immediately on the basis of this video, which was shocking and terrible for all of us." So said Serbian Prime Minister Vojislav Kostunica June 2, 2005, as he announced the arrest of several soldiers who appear in a graphic video broadcast last May on television in Serbia.

It's never a simple path in the Balkans. How could it be after such a devastating civil war that pitted neighbor against neighbor? Especially in Serbia these days, it seems like two steps forward and one step backward. And that's on a good day.

Take yesterday. Serbia's president Boris Tadic showed up to lay a wreath at Srebrenica in Bosnia where 10 years to the day some eight thousand Bosnian men and boys were slaughtered by Bosnian Serb troops. Having the president of Serbia take responsibility for such unspeakable acts was an important symbolic gesture. It was also unfortunately something of a charade.

Journalist Vivienne Walt was visiting London from her home in Paris when the terrorist attacks struck.

When the overground suburban train chugged into London early this rainy morning, and then stalled on the track between two stations, there was the usual muffled grouching in the packed car. The woman sitting next to me called her mom on her cell phone and told her in a mixture of Greek and English that the trains appeared to be a mess -- again. The tall black man in the seat across from me crumpled his copy of The Times and looked nervously at his watch.

At Ethiopia's National Museum in Addis Ababa, I stood in front of the bones of "Lucy." These are among the oldest remains of a pre-human ever found. And though there's dispute over Ethiopia's being the cradle of civilization, the irony is nevertheless a bitter one: How can a country with a reputation as being the beginning of it all now be associated with the end of it all?